add button in UI to download csv

apps/block_scout_web/lib/block_scout_web/templates/address_transaction/index.html.eex

@@ -6,6 +6,7 @@
     <div class="card">
       <%= render BlockScoutWeb.AddressView, "_tabs.html", assigns %>
       <div class="card-body" data-async-listing="<%= @current_path %>">
+        <a type="button" href=<%= address_transaction_path(@conn, :transactions_csv, %{"address_id" => to_string(@address.hash)}) %>><%= gettext("Download all transactions as csv") %></a>
         <div data-selector="channel-disconnected-message" style="display: none;">
           <div data-selector="reload-button" class="alert alert-danger">
             <a href="#" class="alert-link"><%= gettext "Connection Lost, click to load newer transactions" %></a>

apps/explorer/mix.exs

@@ -65,7 +65,6 @@ defmodule Explorer.Mixfile do
       {:benchee, "~> 0.13.1", only: :test},
       # CSV output for benchee
       {:benchee_csv, "~> 0.8.0", only: :test},
-      {:briefly, "~> 0.4", github: "CargoSense/briefly"},
       {:bypass, "~> 1.0", only: :test},
       {:comeonin, "~> 4.0"},
       {:credo, "1.0.0", only: :test, runtime: false},